7 / 11 - (2 / 5-4 / 11) simple calculation

7 / 11 - (2 / 5-4 / 11) simple calculation


7/11-(2/5-4/11)
=(7/11+4/11)-2/5
=1-2/5
=3/5
This is my conclusion after meditation,
If not, please ask, I will try my best to help you solve it~
If you are not satisfied, please understand~



Simple calculation: 16.7-9.67 + 3.8


=16.7+(3.3+0.5)-(10-0.33)
=16.7+3.3+0.5-10+0.33
=20-10+0.5+0.33
=10+0.83
=10.83



7 / 8 * 3 / 4 + 6 / 8 * 9 / 8 = simple calculation


Because 6 / 8 = 3 / 4, so (7 / 8 + 9 / 8) * 3 / 4 = 3 / 2